|Circulation and water exchange near a tidal watershed in the Dutch Wadden Sea|
Zimmerman, J.T.F. (1974). Circulation and water exchange near a tidal watershed in the Dutch Wadden Sea. Neth. J. Sea Res. 8(2-3): 126-138
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579, more
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With the aid of reactive silicate as a natural tracer a flushing time of 6 tidal periods has been calculated for a channel system of 10 km length near a tidal watershed. The flushing time appears to be high as compared with the deeper channels of the Dutch Wadden Sea. However, the reduction in intensity of mixing processes is less than what could be expected from values of tidal velocities. This is supposed to be due to a domination of the mixing process by strong tidal mean circulations set up by non-linear interactions of a tidal wave propagating over a complex bottom topography. The supposition of the existence of such circulations was based on the very evident ebb surplus measured everywhere in the deeper parts of the area investigated, for which a compensating food surplus on the adjacent shoals was supposed to exist.